The bio specimens include tissues, blood, saliva, plasma and DNA are maintained and preserved in the libraries as a continual cell line which in turn will be useful for future purposes. Biobanks has a specification for every traits based on the age, gender, quality and blood group, tissue grafts and some more. Samples are categorized based on the environmental issues and based on donor, if he is exposed to radiation or another substance that may influence human genes. Researchers access bio-banks once they need specimen with similar traits for their research studies